1223486977 has 2 divisors, whose sum is σ = 1223486978. Its totient is φ = 1223486976.

The previous prime is 1223486963. The next prime is 1223486987. The reversal of 1223486977 is 7796843221.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1002102336 + 221384641 = 31656^2 + 14879^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1223486977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1223486977.

It is not a weakly prime, because it can be changed into another prime (1223486947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611743488 + 611743489.

It is an arithmetic number, because the mean of its divisors is an integer number (611743489).

Almost surely, 2^1223486977 is an apocalyptic number.

It is an amenable number.

1223486977 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223486977 is an equidigital number, since it uses as much as digits as its factorization.

1223486977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1016064, while the sum is 49.

The square root of 1223486977 is about 34978.3787074244. The cubic root of 1223486977 is about 1069.5467778047.

The spelling of 1223486977 in words is "one billion, two hundred twenty-three million, four hundred eighty-six thousand, nine hundred seventy-seven".